This is a really simple to assemble (press fit) lamp.

Version 1 - Single hole on the back for the led controller

Version 2 - Hole on the back for the led controller and a rectangular hole for the support (fits perfectly in the IKEA Nordli)

All parts are press-fitted and easy to replace when broken (due to the insert angles on Ikea Nordli the support part (1mm thin may break if the filament is too brittle)